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• Soil and wastewater generated during the field activities were contained in <br /> 208-liter(55-gallon) United Nations approved drums. f <br /> Sample Retention and Analysis <br /> A Y <br /> j • Chain-of-custody procedures, includir g the use of chain of custody forms, were <br /> used to document sample handling antransport from collection to delivery to the <br /> laboratory for analysis. <br /> The samples were laced on ice in an nsulated chest overnight in the custody of a <br /> p P g Y <br /> Shaw employee. The samples were picked up by a courier, and delivered within <br /> approximately 48 hours of collection. The samples were transported to the <br /> laboratory in a motor vehicle, <br /> • Soil samples were labeled with the oring number, and the sample collection <br /> depth. For example, "SB-1-5" represents the first boring (1) collected at a depth <br /> of 5 feet (1.5 meters)below the ground surface. <br /> • Laboratory quality assurance/quality c ntrol procedures are summarized below: <br /> I <br /> 3 — Method Blank Frequency =one per 20 samples <br /> — Matrix Spike/Matrix Spike Duplicate = one per 20 samples <br /> i <br /> — Laboratory Control Sample/Labor tory Control Sample Duplicate = one per <br /> -, 20 samples <br /> i <br /> N:LsacDP120031Pg163035444.3ac.doc E-2 <br /> s <br />